Heat of Solution (ΔHsoln) for NH4NO3 TRIAL 1 TRIAL 2 Mass of NH4NO3: (NH4NO3 = 80.05 g/mol): 5.06g 5.01g Volume of Water (mL): 50 mL 50 mL Temperature (°C): 1 min: 22.7°C 22.8°C
Chemistry
Heat of Solution (ΔHsoln) for NH4NO3
TRIAL 1 TRIAL 2
Mass of NH4NO3: (NH4NO3 = 80.05 g/mol): 5.06g 5.01g
Volume of Water (mL): 50 mL 50 mL
Temperature (°C): 1 min: 22.7°C 22.8°C
2 min: 22.7°C 22.8°C
3 min: 22.7°C 22.8°C
4 min: 14.6°C 22.8°C
5 min: 15.6°C 16.0°C
6 min: 16.0°C 16.0 °C
7 min: 16.0°C 16.0 °C
8 min: 16.2°C 16.2 °C
ΔT = (Tfinal - Tinitial): 6.5 6.6
Mass of Calorimeter + Solution (g): 226.22g 226.48g
Mass of Calorimeter empty (g): 174.58g 175.04g
Mass of Solution (g): 51.64g 51.44g
CALCULATIONS PART A:
qcalorimeter(cal) = (0.961 cal/g °C) · (m) · (ΔT): cal cal
qreaction=-qcalorimeter= cal cal
#moles NH4NO3: mol mol
ΔHsoln=(qreaction/moles NH4NO3: cal/mol cal/mol
Average ΔHsoln(NH4NO3) cal/mol cal/mol
%error= % %
qreaction=- qcalorimeter.
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